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If you missed it, be sure to checkout our recent R600/RadeonSI Gallium3D tests on Ubuntu 14.04 compared to the Catalyst driver where for some workloads this open-source code is running at ~80%+ the speed of AMD's binary blob.

Quite misleading statement since the article is about RadeonSI which is ~100% not recommendable for daily use.

Quite misleading statement since the article is about RadeonSI which is ~100% not recommendable for daily use.

That's not true, with the current versions of all the SI driver components it works better than fglrx now, at least in terms of stability/etc. You only want to use fglrx now if maximum performance matters, or you really need GL4.

Testing mesa 10.2 and kernel 3.14 (custom build, vanilla) i was confronted with slow 2d acceleration and awful performance for steam games.
I wished i could replace catalyst ASAP but the current state of RadeonSI is only usable if you own GCN Gpu but don't want to use 3d acceleration (paradox isn't it?).

Perhaps i did something terribly wrong so feel free to share your experiences

Testing mesa 10.2 and kernel 3.14 (custom build, vanilla) i was confronted with slow 2d acceleration and awful performance for steam games.
I wished i could replace catalyst ASAP but the current state of RadeonSI is only usable if you own GCN Gpu but don't want to use 3d acceleration (paradox isn't it?).

Perhaps i did something terribly wrong so feel free to share your experiences

(Using A10-7850K btw)

Make sure you have a new version of the ati 2d driver, manually turn the 2d tiling on, and a new version of glamor. LLVM too.

Testing mesa 10.2 and kernel 3.14 (custom build, vanilla) i was confronted with slow 2d acceleration and awful performance for steam games.
I wished i could replace catalyst ASAP but the current state of RadeonSI is only usable if you own GCN Gpu but don't want to use 3d acceleration (paradox isn't it?).

Perhaps i did something terribly wrong so feel free to share your experiences

(Using A10-7850K btw)

you are doing it wrong, if you wanna go manual build you need not only kernel and mesa but

The RadeonSI driver is in a good shape and the performance should be close to r600g. I only tested Team Fortress 2 and it was smooth. However, these components should be fresh and built in this order, or obtained from other sources:

- kernel
- llvm
- libdrm
- mesa (make sure the llvm version reported by the configure script matches what you compiled)
- glamor
- xf86-video-ati
- enable 2D tiling manually in xorg.conf
- enable dynamic power management if it's not enabled by default
- you can also set R600_DEBUG=hyperz to get a small performance boost

Testing mesa 10.2 and kernel 3.14 (custom build, vanilla) i was confronted with slow 2d acceleration and awful performance for steam games.
I wished i could replace catalyst ASAP but the current state of RadeonSI is only usable if you own GCN Gpu but don't want to use 3d acceleration (paradox isn't it?).

Perhaps i did something terribly wrong so feel free to share your experiences

(Using A10-7850K btw)

You need llvm 3.4 instead of the stock one which is 3.3

Originally Posted by jrch2k8

you are doing it wrong, if you wanna go manual build you need not only kernel and mesa but